I suppose an even better one would be "looking through broken glass that keeps fucking moving around".

The weirdest thing I discovered was that, back when I juggled professionally, I couldn't read at all during that aura but could still juggle, even hard things like 5+ balls. Strangely it did not screw up peripheral vision.

Worst time was when it came on before a music school performance. Not a hope in hell of keeping track of which line the little circles were on...